Studies on the chorionic structure of the eggs of Corixoidea (Hemiptera: Heteroptera) with scanning electron microscopy Author Konopko, Susana Amanda Author Mazzucconi, Silvia Ana Author Ruf, Monica Lopez text Zootaxa 2013 3737 3 223 240 journal article 10.11646/zootaxa.3737.3.2 30503c49-5e46-4768-a1a8-54f08f876c1f 1175-5326 220838 B3CBE9FA-BF92-475D-9BF4-1E2B3DF439C3 Sigara (Aphelosigara) tucma ( Fig. 10 ) Chorionic surface densely and finely pored, with polygonal units delimited by clearly distinguishable edges not raised from the surface. Within each unit there are coarse punctures of different shape, size and irregular distribution. A nipple structure occurs on the anterior micropylar area.